Image-display game system

1. Field of the Invention An image-display game system with an idea of monsters' virus infection comprises an information storage medium A in which a game program is stored, an actuator , a processor for information processing responding to the actuator and based on the program, an image display , and a temporal writable/readable storage including an infection data region where data indicating whether or not the character has been virus infected is stored. When a predetermined condition is satisfied, data is written into at least one infection data region corresponding to the captured characters stored in the temporal storage means.